Pneumatic tire



B.-L. STOWE.

PNEUMATIC TIRE. APPLICATION FILED APR. 5. 19m.

' Patented Nov) 11,1919.

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B. L. STOWE.

PNEUMATIC TIRE.

APPLlCATlON FILED APR. 5.1918.

Patented Nov. 11, 1919.

2 SHEETS-SHEET 2.

Inventor: bely'amz'rz L- 51 01176,

his Atty BENJAMIN L. STOWE; or JERsEYcI'rY, NEW JERSEY,

ASSIGNOR TO A CORPORATION OF MICHIGAN.

PNEUMATIC TIRE.

Application filed April 5, 1918.

To all whom. 2'23 may concern.

Be it known that l. BENJAMIN L. S'i'ows,

a citizen of the l iiited States, residing in Jersey City, county of Hudson, and State of New Jersey. have invented certain new and useful Improvements in Pneumatic Tires, of which the following is a full, clear, and exact description.

My invention relates to a cord tire composed of a plurality of layers or plies. The principal object of the invention is to so arrange the cords of one ply with respect to cords of an adjacent ply as. independent of any applied fastening, to adequately rcsist the creeping of one ply with respect to the other.

In the manufacture of the tire, each ply may be built up from a single length of cord doubled backward and forward upon itself so that it provides a series of lengths of cord extending side by side. During the building up of the tire, the cord may be looped around two series of pins carried by a suitable form, or the loops may be wedged 25 in suitable recesses formed in said form, so

that the lengths of cord, or cords as they are called, pass obliquely across the form hetween the pins or recesses, the direction of the cords of contiguous layers being reversed. The cords of one layer or ply-near the bights of their loops at the margin of the tire, are bent or turned to cross the cords of an adjacent layer or ply in such manner that the circumferential movement of either ply will be strongly resisted by the other. For example, the cords of an outer ply may be turned inwardly and a reverse turn be given to the cords of an inner ply, the loops of the cords composing the outer layer being retained in position by a bead wire which is parallel with a second head wire serving to retain the cords of the inner ply in position.

The invention may be understood by reference to the accompanying drawings in which: 4

Figure 1 is a fragmentary side elevation of an apparatus suitable for Constructing my-improved tire, showing lengths of cord in ositioii thereon, and

ig. 2 is a cross sectional view of the said ap aratus.

ig. 3 isa fragmentary View showing, the bead wires in position, and

F ig. 4 is a bottom plan view of the same.

Specification of Letters Patent.

Serial N 0. 226,849.

Fig. 5 is a sectional spacing ring.

Fig. (3 IS a fragme orrio. I

MORGAN & WR'M. HT,

Patented Nov. 11. 1919.

perspective iew of a ntary cross sectional view showing the position of the cords in a section of the Fig. 7

completed tire. is a modification of the apparatus for constructing the improved tire, and

l 1g. 8 same.

certain members apparatus, and

ectional view of the Fig. 10 is a fragmental bottom plan view showing a number of the cords and sections bead wires or rings respect to the said modified of the in position with apparatus.

An apparatus adapted for use in the winding of the cord layers of the tire, in its preferred form, comprises a ring core 1 on the inner surface of which is secured 2 provided with laterally extending 3 each fian 'e bein 1 a r a: hanging plate 4- in wh flanges orined with an over 1011 is formed a series of shallow spacing recesses a arranged alternately with respect to a series of deep spacing recesses b. The ring 2 is formed in sections so that it may be readily removed from the r-ing core when desired.

flange 3 is secured a ring 5, the latter being provided with ingpins 6, one pin be of the spacing recesse plate 4.

One method of cons now bedescribe A a series of laterally projecting provided for two s in the overhanging tructing the tire will loop 7 of the cord is passed diagonally across the surface of the into one of the shalcore 1 and is pressed low spacing recesses (L,

the bight of the loop being then carried to and passed around a pin 6. This of the core.

is repeated on the opposite side The nextloop 7 isthen brought across the core and pressed into the next shallow spacing recess loop placed around the holding the first and the bight of its pin adjacent the one named loop. This operation of passing loops across the core, press-.

ing the same into the successive shallow spacin recesses, arounc the pins 6, 18

other side of the core of diagonal cordsis fo The section having and placing the loops performed alternately rst on one side'of the core and then on theuntil a complete layer rmed on the core. its cords at approximately right. angles to those of the first layer, is then begun t he first loop 8 of'the a ring" than two layers may be laid if desired, but

.7 Qt the innermost layer.

cord being brought across the core and pressed into a dee spacing recess 12, its loops then being plac around one of the pins .6 as illustrated in Figs. 1 and 2 of the draw- This is repeated on the opposite side of the core, and the operation of passing loops around the core, pressing the same into the deep recesses *6 and placing the loops around the pins 6 is repeated until the second layer is completely formed. More for the present description the winding will be considered complete when all of the cords of the first two layers are laid.

When the winding operation above described is completed, each of the rings is removed from the ring 2, and thus the pins 6 will be Withdrawn from the loops. Owing to the position in which the loops of each layer are held by an appro riate series of spacing recesses in late 4, the proper position of the loops be ow the plate for the insertion of the beadringsmay readily be arranged. That is to say the loops of the outermost layer will be turned inwardly and the loops of theinnermost layer will be turned outwardly, the loops assuming somewhat the position illustrated in Fig. 3. While the loops hangloosely below plate 4 in the manner above'described, 'a bead ring 9 is placed within the loops 8 of the outermost layer, and a bead ring 10 is placed within the loops After insertion of both bead rings, the sectional ring 2 is removed from the core, and the core may be removed from the carcass formed by the two cord layers, or the tire may be completed and vulcanized on the core before its removal if desired.

After the tire is completely formed and vulcanized in the usual manner, a cross section of a bead, assuming it to be of the clencher type, will appear as illustrated in Fig. (3. By reference to the said figure, it will be seen that the movement of either cord layer circumterentiallyt'bf the tire is prevented by the lock provided at the point at which the cord loo s of one layer cross the other at a substantial distance from the bead rings.

plated corresponding to plate el, Fig, 2, is

provided with wide spacing recesses 14, each recess being adapted to receive and hold side by side a cord loop from each layer. In this modification, the bead rings 9 and 10 may be inserted Within the cord loops while the said loops are held in position in the spacing recesses of the rings.

Having thus described my inventionnvhat- I claim and desire to protect by Letters Patent is:

1. In a tire,thc combination of an inner bead ring and an outer bead ring for a side of the tire, an inner layer of cord having loops around the outer bead ring, and an outer layer of cord having loops around the inner bead ring.

2; In a tire, the combination of an inner other layer at a point between the said bead rings and the periphery of the tire.

4. In}: tire, the conlblnatlon of inner and outer layers of cord, each layer having loops at the side'margins of the tire, the loops of the outerlayer being bent toward the inner wall of the tire, and crossing the loops of the inner layer, and anchoring means for the said loops.

Signed at Jersey City, New Jersey, this 25 day of March, 1918.

BENJAMIN L. STOWE. 

